Google's Tango - Interesting read1976

"Lenovo's new smartphone is smarter than your average handset - and is the first to include Google's Tango augmented reality sensors.
It allows the phone to sense your physical surroundings - such as the room's size and the presence of other people - and potentially transform how we interact with e-commerce, education and gaming.
Utilising Google's 3-year-old Project Tango, the new phone will use software and sensors to track motions and map building interiors, including the location of doors and windows."